Occasional Papers of the Museum of Zoology 9 



Aradidae 



Aradiis robnstiis Uhler. — Dr. Parshley (1921 a. p. 41) has 

 recorded' the single specimen taken by Hubbell at Devils Lake, 

 July 22. 



Aradits lugubris Fallen. — Recorded from Valley City by 

 Parshley {op. cit., p. 80). 



Neididae 

 Neides mnticns (Say). — Uhler lists this form from Pem- 

 bina (1878, p. 504). It was not taken by Hubbell. 



LVGAEIDAE 



■^Lygccus kalmii Stal. — The eastern race angustomarginatus 

 Parshley was taken only at Devils Lake, together with a few 

 specimens intermediate between this form and the typical 

 kalmii. The latter was found in small numbers at Devils 

 Lake, and commonly at Amidon (Hubbell) and at Buford 

 (Olson). Thus it appears that the ranges of the two sub- 

 species overlap in central North Dakota. 



Ah'sins ericcc (Schilling). — I have placed here all the speci- 

 mens of this genus which were taken at Devils Lake during 

 July. Lliler (1878, p. 505) lists this species, under the name 

 A'^. angustatus, from Pembina and Mouse River ; and it is 

 possible that the specimens from "Dakota"' that he mentions 

 (1895, p. 22) in connection with the description of N. minutus 

 should also be referred to this species. 



"^'^Nysins tJiymi (Wolff). — One specimen was brought from 

 the Turtle Mountains and six from Amidon. 



■""Ischnodemus f aliens (Say.) — Mr. Hubbell took a single 

 individual at Devils Lake, July 22. Uhler (1876, p. 305) lists 

 the species from "Dakota." 



Blissiis leucoptcnts (Say). — This species is stated to occur 



